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| The optimum abrasive media is selected from more than 1,000 types of Tipton's products. The type of media depends on the material, shape, and size of work pieces and the finishing purpose. Therefore, our accumulated know-how contributes to establishing and proposing the optimum finishing condition. |
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Types of abrasive media and rule-of-thumb surface roughness |
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| Types of Abrasive Media |
Surface roughness |
Typical Abrasive Media |
| Vitrified Media |
| This is made of abrading agents formed and sintered after kneading into a mixture of various types of clays. |
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| Bulk density: 1.5 to 1.8 |
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Ra 2μm to Ra 0.5μm |
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| Plastic Media |
| This is made of resin cured and injected after mixing polishing materials into resin. |
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| Bulk density: 1.1 to 1.4 |
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Ra 1μm to Ra 0.3μm |
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| Alumina Media |
| This is made from fine alumina powders formed and sintered after mixing silica as a binding material. Also made of natural alumina crushed, melted and chilled gradually. |
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| Bulk density : 1.8 to 2.2 |
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Ra 0.5μm to Ra 0.02μm |
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| Organic Media |
| Crushed walnut shells and corn cobs are coated with wax and fine metal oxide powder. |
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| Bulk density : 0.6 to 0.8 |
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Ra 0.5μm to Ra 0.015μm |
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| Metallic Media |
| Chromium steel or stainless steel spheres |
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| Bulk density : 5 to 6 |
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Forms special surface appearance
Peening effect makes the surface of work pieces glossy |
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| * The surface roughness shown above does not stipulate finishing time. |
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| Abrasive Media Selection Criteria |
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Lodging of abrasive media to holes and grooves of work pieces |
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Effectiveness of abrasive media to the area to be finished |
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Material and hardness of work pieces |
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Separation of work pieces from abrasive media |
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Gap between before and after barreling |
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Type of barrel finishing machine to be applied |
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| * Reproduction prohibited |
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